Gaston is a town in Washington Township, Delaware County, Indiana, United States. The population was 871 at the 2010 census. It is part of the Muncie, IN Metropolitan Statistical Area.
Gaston is located at 40°18′49″N 85°30′3″W / 40.31361°N 85.50083°W / 40.31361; -85.50083 (40.313547, -85.500848).
According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.9 km²), all of it land.